Cisco Performance Routing Engine 5 Manuel d'installation du matériel - Page 2
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Revised: October 25, 2018
Cisco Performance Routing Engine 5 Hardware Installation
Guide
The Cisco Performance Routing Engine 5 (PRE5) is the next-generation processor engine for the Cisco uBR10012 Universal Broadband
Routers. The PRE5 module comprises two separate engines or processors—route processor that performs all control functions of
the PRE5 and the forward packet engine that performs the Parallel eXpress Forwarding (PXF) function and provides fast path
forwarding and output scheduling.
The route processor handles all control traffic and any packets that are unrecognized by the fast path. The route processor also sets
up data structures for the forward packet engine.
What is Cisco Performance Routing Engine 5?
With the introduction of the Cisco uBR-MC3GX60V line cards that dramatically increase the downstream capability for the Cisco
uBR10012 Universal Broadband Routers to 24 Gbps (if all 8 line card slots are used) and the use of the DOCSIS 3.0 wideband SPAs
(with 8 Cisco Wideband SPAs), downstream traffic can increase up to 40 Gbps.
To support this increase in downstream bandwidth and effective with Cisco IOS Release 12.2(33)SCH, the new Cisco Performance
Routing Engine 5 (PRE5) module provides up to 60 Gbps (40 Gbps downstream and 20 Gbps upstream) WAN backhaul capacity
and throughput.
Note
The throughput will vary depending on the packet size.
Important
Effective with September 09, 2014, the Cisco PRE5 uses a new version of the CPU. You must run the
Cisco IOS Release 12.2(33)SCH2 or a later release on the Cisco PRE5 for using the new version of the CPU. The board serial
number of the Cisco PRE5 with the new version of the CPU starts with CAT1837XXXX. The deviation label on the board
is D507963.
Note
The Cisco UBR10 MC5X20 line cards are not supported on the PRE5.
Note
Foam gaskets are required if you are replacing an earlier generation of the PRE module with PRE5.
Features of the Cisco PRE5 module include:
• 512 KB NVRAM
• 4 GB system memory for routing tables
• 256 MB of bootflash memory and 32 MB of read-only memory monitor (ROMMON) flash memory
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